Is there some automatic way to trim a bunch of 1D cross section cut lines up to 2D flow area boundary (or lateral structure since LS is supposed to be along the flow area boundary usually) for 1D-2D coupled modeling? I tried to split feature (cross section cut line) and then delete feature for each individual cross section cut line, but if a cross section is from a channel design template (thus 1D cross section geometry is different from that cut by exist terrain), after I split/deleted features, the remain-in-place 1D cross section is automatically returning to a shape like it is cut from exist terrain, not able to keep its original 1D channel design template’s shape.